Authors & Affiliations
Ioannisian M.V., Davidenko V.D.
National Research Center "Kurchatov institute", Moscow, Russia
Davidenko V.D. – Head of Laboratory, National Research Center "Kurchatov institute".
The Monte-Carlo method is widely used for the solution of the Boltzmann transport equation for neutrons. It easily adapts for the modern multiprocessor computers. One of the developments based on Monte-Carlo method is the known application program package (APP) of MCU5. The working programs intended for calculation of steady-state processes in various reactor types gather on its basis. At the same time, the works on development of APP MCU5 including for support of simulation of nonstationary processes are continued in Research National Center "Kurchatov Institute". It yields to creation of programs using both the direct Monte-Carlo method (KIR), and multipoint kinetics method (MRNK).
The main scope of such programs is simulation of processes in the systems having difficult construction and the strongly non-uniform material composition where the increased detailing in the description of physical processes is required. The published data on simulation of kinetic processes using the Monte-Carlo method for these systems are absent.
This paper provides the results of neutron kinetics simulation in a full-scale fissile region of the KLT-40S reactor with KIR and MRNK codes. Processes with the introduction of positive reactivity, as well as with the movement of individual groups of rods under the condition of maintaining stationary criticality are considered.
kinetics, calculation, multipoint kinetics, direct Monte Carlo method, nuclear reactor
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